String Reference returning word "null"

All I'm trying to do is reference a string stored in my xml files and then use that same String in an array. This is taking place in the non Activity class MyDataProvider, shown below. The problem is that when I have the strings display on the screen, my reference strings just display the word "null". As far as I can tell I have referenced them correctly, but then they wouldn't be returning null. I'm sure it's a dumb mistake, but I'm still kind of new to Android and very much appreciate help.